U.S.-Japan Cooperative Research: Fundamental Heat Transfer Studies in Polymer Processing and Manufacturing

该奖项将支持为期两年的美国-日本合作社 Raymond Viskanta教授，系 普渡大学机械工程系教授 Yasuo Kurosaki，传热实验室主任， 东京大学机械工业系 理工学院 Satish Ramadhyani教授， 普渡大学机械工程系也将在 参与该项目。 该项目的目标是开发基本的 了解聚合物在模具中的流动和机理 残余应力在模塑聚合物中的产生 注塑工艺要求生产精密的 模制聚合物组件。 这将通过使用 原位，非侵入性实验技术，以获得测试数据， 过程的建模，以及计算 模拟真实的系统的技术。 理论模型将在普渡大学开发， 在注塑过程中对聚合物进行加工。 预测 这些模型将与在 东京工业大学的仪器。 美国和 日本研究人员将共同努力， 普渡大学利用实验数据建立的数学模型 在东京使用非侵入式光学（双折射） 测量温度和流量的技术 聚合物被模塑的冷却阶段。 这是一个独特 有可能确定冻结层的方法 厚度、熔体前沿位置、剪切应力和温度场 而不干扰该过程。

This award will support a two-year U.S.-Japan cooperative research project between Professor Raymond Viskanta, Department of Mechanical Engineering, Purdue University, and Professor Yasuo Kurosaki, Director of the Heat Transfer Laboratory, Department of Mechanical Engineering for Production, Tokyo Institute of Technology. Professor Satish Ramadhyani of the Department of Mechanical Engineering at Purdue will also be involved in the project. The goal of the project is to develop basic understanding of both polymer flow in molds and the mechanisms of residual stress generation within molded polymers during injection molding processes required for production of precise molded polymer components. This is to be achieved by use of in situ, noninvasive experimental techniques to obtain test data, modeling of the processes, and development of computational techniques for simulating real systems. The theoretical models will be developed at Purdue to simulate processing of polymers during injection molding. Predictions of these models will be compared with experiments carried out on the apparatus at the Tokyo Institute of Technology. The U.S. and Japanese researchers will work together to validate the mathematical models developed at Purdue using experimental data obtained in Tokyo employing non-intrusive optical (birefringence) techniques for making temperature and flow measurements during the cooling stage of a polymer being molded. This is a unique method that has the potential of determining the frozen layer thickness, melt front position, shear stress, and temperature fields without interfering with the process.